Refactor app in to its own slice

slices/main/templates/blogroll/index.html.slim

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+- context.content_for(:title, "Blogroll | ")
+div class="mb-4 prose dark:prose-invert max-w-prose mx-auto text-gray-800 dark:text-gray-200"
+  h1 Blogroll
+
+div class="h-feed mb-12 max-w-prose mx-auto prose dark:prose-invert"
+  p Here's the list of all the sites & blogs I enjoy reading, taken directly from my RSS aggregator!
+  p
+    a href="/blogroll/opml" Get the OPML
+  div class="grow" hx-get="/blogroll/list" hx-trigger="load"
+
+

slices/main/templates/blogroll/list.html.slim

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+- blogroll.each do |blog|
+  div class="flex mb-4"
+    img loading="lazy" class="w-8 h-8 rounded mx-0 my-0 mr-4" src=blog[:icon]
+    div
+      div
+        = "#{blog[:title]} — ("
+        a href=blog[:url] RSS
+        = " | "
+        a href=blog[:html_url]  Website
+        = ")"
+      div
+        small Categories:
+        small = " #{blog[:categories].join(",")}"

slices/main/templates/blogroll/opml.xml.builder

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+# xml.instruct! "xml-stylesheet", {href: "/assets/style.xslt", type: "text/xsl"}
+xml.opml("xmlns:frss" => "https://freshrss.org/opml", version: "2.0") do
+  xml.head do |head|
+    head.title "Daniel Nitsikopoulos's RSS subscriptions"
+    head.link "https://dnitza.com/blogroll/opml"
+    head.lastBuildDate Time.now.rfc2822
+    head.pubDate Time.now.rfc2822
+    head.ttl 1800
+  end
+
+  xml.body do
+    blogroll.each do |blog|
+      xml.outline(text: blog[:title], type: "rss", xmlUrl: blog[:url], htmlUrl: blog[:html_url])
+    end
+  end
+end